1.3 Ionic Bonding

Question 1

Determine ionic charge and whether electrons will be lost, gained or shared

Answer 1

• atoms need to be stable - they achieve this by having a full valence shell
• if they lose electrons –> metallic or ionic
• if they gain electrons –> ionic or share electrons (covalent)
• if they are noble gas –> no bonding

Question 2

what are the diatomic elements?

Answer 2

• Hydrogen (H2)
• Nitrogen (N2)
• Oxygen (O2)
• Fluorine (F2)
• Chlorine (Cl2)
• Bromine (Br2)
• Iodine (I2)

Question 3

Rules for constructing ionic formulae including for compounds

Answer 3

• cation + anion
• not all cations are metals (ammonium (NH4+))
• anions if found on the periodic table change the ending to -ide
• transition metals: use roman numerals to indicate ion charge

Question 4

Formula writing to balance the charges of the ions

Answer 4

you need to balance the charges of the ions

Question 5

naming covalent compounds

Answer 5

the number of each atom needs to be included and 2nd atom ends in -ide

Question 6

formula of covalent compounds

Answer 6

the name tells you how many of each atom is present
1 = mono
2 = di
3= tri
4=tetra
5=penta
6=hexa
7=hepta
8=octa
9=nona
10=deca

Question 7

formulas of acids need to remember

Answer 7

hydrochloric acid = HCL
nitric acid = HNO3
sulfuric acid = H2SO4
carbonic acid = H2CO3